Redoubt Watch

Elevated surface temperatures at the summit of Cleveland Volcano were observed in satellite images this morning. AVO has received no reports of ash emission or other indications of eruptive activity over the past 24 hours. Sudden explosions of blocks and ash are possible with little or no warning. Ash clouds, if produced, could exceed 20,000 feet above sea level. If a large ash-producing event occurs, nearby seismic, infrasound, or volcanic lightning networks should alert AVO staff quickly. ...

Seismic tremor, intense elevated surface temperatures, and ash, gas and steam emission persist at Pavlof Volcano. A narrow plume of steam, ash, and gas, occasionally up to 20,000 ft. above sea level, and extending southeast from the volcano over the North Pacific Ocean is visible in satellite images today. Pilot reports from this morning indicate that lava fountaining and ash emission continues. Minor to trace ash fallout could be occurring on the north, east and southeast flanks of the ...

Cleveland Volcano remained active during the past week. During clear satellite views, vigorous steam plumes and elevated surface temperatures were observed. Re-analysis of earlier images revealed that a small lava flow had breached the southeast rim of the summit crater and extended up to about 1.5 km down the flank. Sudden explosions of blocks and ash are possible with little or no warning. Ash clouds, if produced, could exceed 20,000 feet above sea level. If a large ash-producing event ...

Pavlof Volcano began erupting following an increase of seismic activity on the morning of May 13. Seismic tremor and intense elevated surface temperatures heralded the onset of lava fountaining from a vent high on the north flank, which immediately began supplying a lava flow that advanced down the northwest flank. Lava contact with ice and snow produced voluminous steam and ash plumes readily visible from the nearby communities of Cold Bay and Sand Point. Incandescence at the summit has ...

Cloudy conditions have obscured satellite views of the volcano during the past 24 hours. Sudden explosions of blocks and ash are possible with little or no warning. Ash clouds, if produced, could exceed 20,000 feet above sea level. If a large ash-producing event occurs, nearby seismic, infrasound, or volcanic lightning networks should alert AVO staff quickly. However, for some events, a delay of several hours is possible. Cleveland Volcano does not have a local seismic network and is ...

Pavlof Volcano continues to erupt. Lava fountaining at the summit has been observed and photographed, and a continuous ash, steam, and gas cloud generated by the activity extends downwind from the volcano for 50 to 100 km at an altitude of about 20,000 ft above sea level. This morning the cloud was carried to the southeast. Satellite images show persistent elevated surface temperatures at the summit and on the northwest flank, commensurate with the summit lava fountaining and resulting lava ...

Elevated surface temperatures continued at Cleveland Volcano over the past 24 hours. No explosions have been detected by regional infrasound data. There has been no further information about the lava flow. Sudden explosions of blocks and ash are possible with little or no warning. Ash clouds, if produced, could exceed 20,000 feet above sea level. If a large ash-producing event occurs, nearby seismic, infrasound, or volcanic lightning networks should alert AVO staff quickly. However, for ...

The eruption of Pavlof Volcano continues. Elevated seismic activity persists and a steam and ash cloud are visible in web camera images rising occasionally up to about 20,000 ft. above sea level. A diffuse ash plume was reported late last night at an altitude of 15,000 above sea level and extending downwind to the northeast for up to 100 miles before dissipating. A recent pilot report today indicated a dark ash cloud extending east-northeast at an altitude of 20,000 above sea level. ...

Elevated surface temperatures continued at Cleveland Volcano over the past 24 hours. No explosions have been detected by regional infrasound data. Analysis of recent satellite imagery revealed a 100-m-wide lava flow, breaching the southeast rim of the summit crater, and extending about 1.5 km down the southeast flank. Sudden explosions of blocks and ash are possible with little or no warning. Ash clouds, if produced, could exceed 20,000 feet above sea level. If a large ash-producing ...

Following an increase in seismic activity and presence of intense elevated surface temperatures yesterday, eruptive activity at Pavlof has been confirmed. Pilot reports and satellite images today reveal that a spatter-fed lava flow has advanced about a half a kilometer down the north flank of the volcano. See an image at http://www.avo.alaska.edu/images/image.php?id=48921. Minor steam and ash emissions are visible at the summit from nearby Cold Bay.

A thermal anomaly was visible at Cleveland Volcano over the past 24 hours. No explosions have been detected by regional infrasound data. Sudden explosions of blocks and ash are possible with little or no warning. Ash clouds, if produced, could exceed 20,000 feet above sea level. If a large ash-producing event occurs, nearby seismic, infrasound, or volcanic lightning networks should alert AVO staff quickly. However, for some events, a delay of several hours is possible. Cleveland Volcano does ...

Seismic activity at Pavlof Volcano increased this morning commensurate with the presence of an intense thermal anomaly at the summit observed in latest satellite imagery. Similar patterns of seismicity and elevated surface temperatures have previously signaled the onset of eruptive activity at Pavlof. Although not yet visually confirmed, a low-level eruption of lava has likely begun from a summit vent. No ash clouds have been detected. The seismic activity began at about 8:00 Am (16:00 ...

Seismic activity at Pavlof Volcano increased this morning commensurate with the presence of an intense thermal anomaly at the summit observed in latest satellite imagery. Similar patterns of seismicity and elevated surface temperatures have previously signaled the onset of eruptive activity at Pavlof. Although not yet visually confirmed, a low-level eruption of lava has likely begun from a summit vent. No ash clouds have been detected.

A thermal anomaly was visible at Cleveland Volcano over the past 24 hours. No explosions have been detected by regional infrasound data. Sudden explosions of blocks and ash are possible with little or no warning. Ash clouds, if produced, could exceed 20,000 feet above sea level. If a large ash-producing event occurs, nearby seismic, infrasound, or volcanic lightning networks should alert AVO staff quickly. However, for some events, a delay of several hours is possible. Cleveland Volcano does ...

Clear satellite views showed a vigorous steam plume and thermal anomaly at Cleveland Voclano over the past 24 hours. No explosions have been detected by regional infrasound data. Sudden explosions of blocks and ash are possible with little or no warning. Ash clouds, if produced, could exceed 20,000 feet above sea level. If a large ash-producing event occurs, nearby seismic, infrasound, or volcanic lightning networks should alert AVO staff quickly. However, for some events, a delay of several ...

Due to renewed explosive activity at Cleveland Volcano, AVO increased the Volcano Alert Level/Aviation Color Code to WATCH/ORANGE on May 4. An explosion was detected by regional infrasound data at 5:00 AM AKDT (13:00 UTC) May 4. Subsequently, the volcano transitioned into a continuous low-level eruption that continued through 12:30 PM AKDT (20:30 UTC) on May 6. Regional infrasound data detected multiple discrete explosions per day and near constant air wave signals from Cleveland during this ...

The most recent known explosion of Cleveland volcano occurred around 12:30 PM AKDT (20:30 UTC) on May 6. No explosions have been detected by regional infrasonic data, and the volcano has been obscured by clouds in satellite data over the past 24 hours. Sudden explosions of blocks and ash are possible with little or no warning. Ash clouds, if produced, could exceed 20,000 feet above sea level. If a large ash-producing event occurs, nearby seismic, infrasound, or volcanic lightning networks ...

The most recent known explosion of Cleveland volcano occurred around 12:30 PM AKDT (20:30 UTC) on May 6. No further explosions have been detected by regional infrasonic data. The volcano has been obscured by clouds in satellite data over the past 24 hours. Sudden explosions of blocks and ash are possible with little or no warning. Ash clouds, if produced, could exceed 20,000 feet above sea level. If a large ash-producing event occurs, nearby seismic, infrasound, or volcanic lightning ...

The most recent explosions of Cleveland volcano detected by networks on Okmok, 120 km (80 mi) to the northeast of Cleveland, occurred around 12:30 pm AKDT yesterday (20:30 UTC). Overall however infrasonic data suggest that the eruption has continued to wane since Sunday. The volcano has been obscured by clouds in satellite data over the past 24 hours. Sudden explosions of blocks and ash are possible with little or no warning. Ash clouds, if produced, could exceed 20,000 feet above sea level. ...

Low-level eruption at Cleveland volcano continues. Explosions were detected at 11:23 PM AKDT 5 May (7:23 UTC 6 May) and 08:00 AM AKDT 6 May (16:00 UTC) by the Okmok network, 120 km (80 mi) to the northeast. Overall however infrasonic data suggest that the eruption may have waned since yesterday. The volcano is obscured by clouds in satellite data, but a thermal anomaly continues to be visible. Sudden explosions of blocks and ash are possible with little or no warning. Ash clouds, if ...